I own a small photography studio and updated my Mac OS to El Capitain as recommended. I noticed after the update that Tethered Shooting was not working in Lightroom 6 even though it was still a menu option. My iMac still recognises my Nikon D700 but Tethered Shooting simply does not work. This has caused my business real issues as I normally sit down with Clients after the Photoshoot so they can choose the portrait images they want to buy. Now it's back to contact sheets by eMail the following day which is costing me time and money.

Why has this matter still not been resolved in the Software and when will it be fixed?

This update has not resolved the Tethered Shooting issue completely..... after several shots Lightroom consistently freezes on both El Capitan and Yosemite (OS X) that I use in my Studio. Do you boneheads not test and test again before releasing software updates as you have cost my business hours and hours of additional labor. Perhaps multiply that by all the photography studios around the world that use Lightroom and maybe you get the 'picture'...